According to
The Journal, her fund has gained 120% this year betting
against the euro, the Australian dollar, and the Brazilian real.
Ko has made $60 million, bringing her personal wealth above $100
million, according to the report. She used leverage,
or borrowed money, to increase the returns on her
investments, the report said.

Maths whiz

She worked for Citigroup on the emerging-markets
currency-trading desk, and she also had stints at Bankers Trust,
Deutsche Bank, and the hedge fund Blue Border Partners. She
joined Bear Stearns in 2002. There she founded what is now
Covepoint in 2005. The fund managed around $2.4 billion
in assets at its peak.